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Expired Canadian patentCanada

Connector for programmable logic controller having modifiable termination therefor

CA 2268906 C · Owner: Licht, Harold J. · Inventors: Licht, Harold J.; Lawrence, Steven; Spears, Garland

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A connection scheme for a Programmable Logic Controller is taught. Briefly stated, a printed circuit board having a plurality of electrically conductive traces therein and a plurality of electrically conductive fingers associated with the conductive traces is disclosed. The pitch and size of the conductive fingers coincide with that of a PLC I/O connector. One or more of a plurality of interconnective devices may be connected to the printed circuit board thereby minimizing adverse thermal effects from adjacent thermocouple wires or providing for use of various interconnection devices or signal conditioning such as switches, displays, discrete devices and the like.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed September 16, 1997 and granted November 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 16, 1997
GrantedNovember 26, 2002
Term endedSeptember 16, 2017
Patent numberCA 2268906 C
Classification (IPC)H01R31/06 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedSep 16, 1997Patent grantedNov 26, 2002Term endedSep 16, 2017

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.